Ninja Popups - Popup appears multiple times

I was testing a popup on my site. In my laptop it seems to work fine, but when I tested from my desktop, the popup wasn’t working properly. It loads multiple times after it has been closed. About 4 to 5 times in a row. I configured it so that it appears 10 seconds after the page loads, and for the cookie to last 30 days both for subscribers and non subscribers.

I really hope the multiple popup appearance issue is only a rare case on my end and is not happening to a considerable number of my site visitors. If so, how can I check and fix the issue?